By the way, the content does appear to be somehow updated, just not visually.
Here's an example of what I mean:
1. Go to www.yahoo.com
2. Click on the "What's New" link at the top
3. In the URL field, select the text "yahoo" as part of the domain name, and type
in "netscape"
---> As soon as you type a character into the URL field, the actual URL (rather
than the one that we typed in earlier) will appear in the URL field. You can also
get the same results in some pages by resizing the window. <--

Digging with the debugger, the new text is being correctly set, just the widget
isn't redrawn after the text changes. Windowshading the window will force a
redraw that causes it to display correctly. Viewer is doing the right thing, but
the redraw just isn't happening.